Joni Ortio was born on April 16, 1991 in Turku, Finland. The 6í1 goaltender was playing for Turun Palloseura of the Finnish Elite League when he was drafted by the Calgary Flames in the sixth round, 171st overall, in the 2009 NHL Entry Draft.

Ortio would play most of the 2010-11 season in Finland before he would get his first taste of North American Hockey where the Flames would assign him to play for the Abbotsford Head. He would play one game for the Heat that season, a 6-0 loss to the Toronto Marlies on April 10, 2011. Ortio would begin the 2011-12 season with Abbotsford, but after nine games he was re-assign on loan back to Turun Palloseura for the rest of the season.

The following season Ortio would play for HIFK Helsinki where he would play in 53 games for the team. His play enabled him to make the Finnish national team where he would play and win three games in the 2013 IIHF World Championships.

During the 2013-14 season, Ortio would return to North America where he would play in nine games for the ECHLís Alaska Aces before being called up to the Abbotsford Heat. This time around in Abbotsford, Ortio would have himself a 27-8-0 record with two shutouts, earning himself a place on the AHL All-Rookie Team. It was also during this season Ortio would be called up by the Calgary Flames for his NHL debut where he would lose 2-0 to the Los Angeles Kings on February 27, 2014. On March 5, 2014, Ortio would get his first NHL win in a 4-1 victory over the Ottawa Senators.

In the 2014-15 season, Ortio would return to the AHL where the Flamesí AHL affiliate would relocate to Adirondack to become the Flames. Ortio would be named to the 2015 AHL All-Star Game by winning 17 games by mid-season. Ortio would also return to the NHL where he would earn his first ever shut out in a 1-0 victory over the Vancouver Canucks.

On the international stage, Ortio would represent Finland four different times. In 2009 he would help Finland win the Bronze Medal at the IIHF World U18 Championships. He would represent Finland in both the 2010, and 2011 IIHF World Junior Championships where Finland would finish fifth and sixth respectively. While in 2013 he would help Finland to a fourth place finish in the IIHF World Championships.